281879 has 4 divisors (see below), whose sum is σ = 303576. Its totient is φ = 260184.

The previous prime is 281867. The next prime is 281887. The reversal of 281879 is 978182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 281879 - 2⁸ = 281623 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10829 + ... + 10854.

It is an arithmetic number, because the mean of its divisors is an integer number (75894).

2²⁸¹⁸⁷⁹ is an apocalyptic number.

281879 is a deficient number, since it is larger than the sum of its proper divisors (21697).

281879 is a wasteful number, since it uses less digits than its factorization.

281879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21696.

The product of its digits is 8064, while the sum is 35.

The square root of 281879 is about 530.9227815794. The cubic root of 281879 is about 65.5673413434.

The spelling of 281879 in words is "two hundred eighty-one thousand, eight hundred seventy-nine".